As Stoney says, we pretty much act under our own impetus along a set of loose rules as to what is and isn't acceptable. We will consult sometimes if there is a debatable issue or are unsure about the best way to deal with a problematic poster who may be more established here, but most bannings or trips to Coventry are a snap decision on the part of the Mod.
We do get a handfull of reported posts each week and will look into any that are serious and have banned people over them. While I was not responsible for your trip to Coventry May, you ought to bear in mind that had you been a less well known poster, you would have been banned outright for your comment.